16536280320 has 216 divisors, whose sum is σ = 65387527296. Its totient is φ = 3779702784.

The previous prime is 16536280289. The next prime is 16536280339. The reversal of 16536280320 is 2308263561.

It is a happy number.

16536280320 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 628 + 0 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21892 + ... + 183171.

Almost surely, 2^16536280320 is an apocalyptic number.

16536280320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16536280320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32693763648).

16536280320 is an abundant number, since it is smaller than the sum of its proper divisors (48851246976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16536280320 is a wasteful number, since it uses less digits than its factorization.

16536280320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205097 (or 205080 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 16536280320 in words is "sixteen billion, five hundred thirty-six million, two hundred eighty thousand, three hundred twenty".